Phonograph, &amp;c.



PATBNTED' MAR. a, 1904.

' E. A. IVAITS. PHONOGRAPH, 8w. APPLICATION FILED MAYZ O, 1903.

N0 MODEL. 1

M/rrwsssss 3 elevation of UNITED STATES Patented March 8, 1904.

PATE T OFFIcE.

FRANCE.

FRAPICE, ASSIGNOR TO COMPAGNIE CINEMATOGRAPHES ET APPAREILS 'PHONOGR APH; 800. g

SPECIFICATION forming part of Letters Application filed May 20,1903.

Patent No. 754,313, dated March 8, 1904. Serial No. 158,028. (No model.)

To all, whom it may concern.-

Be it known that I, ERNEST ALBERT IVATTS, a citizen of Great Britain, residing at Paris, in the Department of the Seine, France, have 5 invented new and useful Improvements in and Relating to Phonographs and the Like, of which the following is a specification.

In phonographs with cylindrical records the records are generally fitted upon a conical I mandrel. These records thus possess conical bores and are secured upon the conical mandrels by wedging. This method of fixing the records has the advantage that a great number of records may be used in connection with the same apparatus,

ords of equal thickness throughout--that is, records with a cylindrical central bore.

This invention relates to an expansible inner sleeve for securing cylindrical records of 2 phonographs in place upon the conical mandrel generally provided for this purpose. These re ords are of equal thickness throughout-that is, they are cylindrical inside as well as outside.

In the accompanying drawings, Figure 1 is a sectional elevation of a conical mandrel. expansiblesleeve, and eylindricalrecord. Fig. 2 is an end view of the record and one-half of the sleeve. Fig. 3 is a longitudinal sectional the sleeve. Fig. a half end view of the same.

In Fig. 1, a is the central conical mandrel or plug of the phonograph or a piece mounted upon a rotating shaft. 7/ is the expansible integral sleeve with corrugations or grooves, which are produced by creasing or bending the tube in such a manner that the surfaces or outer edges of the ridges 0 cl e f g 71. are in or come against a cylindrical internal sur- 4 face, while the in'ncr or du ter edges of the ridges Z: l mw o are formed to engage with an external conical surface. The record i is placed upon the sleeve 1) which is then pushed upon the conical mandrel a in the direction of the arrow j, the creased or corrugated surfacesbeing thus subjected to deformation in but cannot be used with recrespect of height and width, the outer edges of the ridges being firmly pressed against the inner face of the record, and the inner edges of the ridges tightly embracing the conical 5 surface of the mandrel. In Fig. 1, p is a cupshaped disk by means of which the sleeve is pushed onto the cone a by the agencygof the nut q engaging with a screw 2, forming a central extension of the mandrel a. 'I do not limit myself to the employment of this expansible sleeve only for the purpose of fixing the record in place, but reserve the right to use it in any other manner-as, for example, for securing the records during the process of manufacture when they are undergoing polishing and turning.

The sleeve, as described, may be formed from any suitable material, and the ridges'or corrugations may be pointed, rounded, or flat 5 and of any suitable dimensions.

Having now particularly described and ascertained the nature of my said invention and in what manner the same is to be performed,

I declare that what I claim is- 7 I. An cxpansible sleeve having longitudinal corrugations whose outer edges lie in a cylinas to engage with the inner ical record. and whose in- 1 plane, corresponding gage the external conary nhonograplrmanl l l l l l l l drical plane, so

surface of a cylindr ner edges lie in a eonica with and adapted to en ical surface of the ordin drel.

2. The combina tion with a phonograpl mandrel having the usual conical taper, of a record having a cylindrical interior, and an expansible integral sleeve having a corrugated surface and adapted to he slid lengthwise into the annular space between the mandrel and the record, and. firmly supportthe latter.

In testimony whereof I have signed my name to this specification in the presence of two subscribing witnesses.

' ERNEST ;.\LBEIi-T IVATTS. \Vitnesses:

A UGYS'IUS E. imam, ll'nxnr DORNLICY. 

